Energy Gateway Gateway West Project Gateway South Project

Energy GatewayGateway West Project Gateway South Project

Technical Study Leads: Idaho Power (Gateway West) and PacifiCorp (Gateway South)

WECC Phase 2 Study Group Kick-Off MeetingMay 22, 2009Salt Lake City, Utah

2

Energy Gateway Project - Phase 2 Technical Studies

Standards of Conduct Non-Disclosure Statement

The following procedures have been implemented to provide Standards of Conduct Safeguards:

Ten day advance notice of public meeting All eligible customers invited Telephone participation provided Handouts posted on OASIS prior to meeting Meeting notes will be taken and posted One eligible customer must be in attendance Meetings no more than twice per month

3


Our agenda for today…

1. Welcome

2. Introductions

3. EGW Phase 2 Study Process – PCC Presentation (April 2009)

4. Facility Staging

5. Study Area Path Interactions, Study Participants & Issues

6. Study Area: “Straw-man” Study Plan

7. Study Schedule

8. Q&A

4


1. Welcome

2. Introductions

WECC Phase 2 Study Group Kick-Off Meeting

5



3. Energy Gateway Phase 2 Study Process - PCC Presentation (April 2009)

6


Gateway West

MSTI

SWIP

7


Gateway South

8


Phase 1 Study Effort

Studies were performed and reported by path Five for Gateway West Three for Gateway South

Reviewing entities interested in local impacts

9


Leverage Phase 1 Experience

Perform and review studies within a local area Attach appropriate local area studies for Phase 2

reports

10


Phase 2 Method

Hold Energy Gateway review meetings Gateway West Project Review Study Group Gateway South Project Review Study Group

Form five sub-area study groups

11


Gateway West Study Areas

Bridger Study Area

Windstar Study Area

Southern Idaho Study Area

MSTI

SWIP

12


Gateway South Study Areas

Aeolus South Study Area

Mona South Study Area

13


Process Flow Diagram

Gateway Energy Phase 2 Planning Study Coordination ProcessP

roje

ct R

evie

w

Gro

up

Com

bine

d P

roje

ct R

evie

w

Gro

up

Sub

-Are

a W

ork

Gro

upP

roje

ct S

pons

orW

EC

C T

SS

an

d P

CC

Project Data

WECC Base Case

Sub-AreaStudyPlan

Study Area Input

AcceptAreaStudyPlan?

No

Perform Area PlanningStudies

Yes

AcceptStudy Results

?No

Yes

Phase 2Report

Accept Report

?

No

Yes

Accept Report

?

No

Phase 3Status

Yes

ProjectStudyPlan

Accept ProjectStudyPlan?

No Yes

Project Plan Input

Notice to Proceed

Phase 2 Report Appendix

Phase 2 Report Appendix

Perform Project PlanningStudies

14


Example Phase 2 Report

Gateway WestPhase 2 Report

Appendix ASouthern Idaho Area

Study

Appendix BBridger Area Study

Appendix CWindstar Area Study

15


Energy Gateway Project

4. Facility Staging

16


EGW Facility Staging

Due to the scope and nature of the EGW project, not all facilities will be constructed during the same period.

As such, facilities will be installed following a segmented approach – focusing on one leg of the project, then another leg, etc.

For example: Populus – Terminal 345 kV #1

& #2 will be in-service 12/2010 (This project was granted Phase 3 status in 11/2008)

Pinto 345 kV series capacitor (on PNT-HNT 345 kV line) will be in-service 5/2010

St. George (Utah) SVC will be in-Service in 5/2011

17


EGW Facility Staging

Rather than initiate technical studies for each transmission segment, it was decided to group transmission segments into two logical project stages that would be evaluated by WECC Phase 2 study group (or sub groups).

Incremental transmission limitations for transmission segments that are added between stages, will be addressed via OTC studies. [This same process was followed by BPA and AVISTA for the West of Hatwai Expansion project.]

18


EGW Facilities – Stage 1 (1500 MW)

WYOMING

CRESTON

POPULUS

2

LIMBER(future)

CEDAR HILL

ToCAPTAIN JACK

KINPORTMIDPOINT

BEN LOMOND

TERMINAL

MINERS

AEOLUSBRIDGER

BORAH

WIND RIVER

HAYDEN

BONANZA

4

RED BUTTE

MONA

UTAH

SALT LAKE CITY

COLORADO

NEVADA

IDAHO

MONTANA

2

2

4

CAMP WILLIAMS

HUNTINGTON

SIGURD

PINTO

FOUR CORNERS

HARRY ALLEN CRYSTAL

NEW MEXICOARIZONA

CRAIG

FLAMING GORGE

YELLOW TAIL

WYODAK

500 kV

345 kV

230 kV

Legend

Revision: 4.2Updated on: 5/21/09

CHEYENNE

DENVER

2

OREGON

SUMMERLAKE

SALEM

McNARY

2

2

2

TERMINAL

OQUIRRH

CAMP WILLIAMS

90TH SOUTH

MID VALLEY

To MONA

2

ROCK SPRINGS

ATLANTIC CITY

WINDSTARGOSHEN

HEMINGWAY

BOISE

Gateway Energy Project Stage 1 - Transmission Plan

DAVE JOHNSTON

Planned Future Voltage

2

Line Loop-In

Line Constructed 500 kV, Energized

345 kV

Kinport-MP Line Looped-In to Borah. Borah – MP Portion Converted to 500 kV

To Ben Lomond

2

19


Gateway West – Stage 1 Facilities

Hemingway - Bridger

2 3 0 kV to R ock S p rin gs

2 3 0 kV to A e o lu s/C re sto n

B rid g e r

G o sh e n

G atew ay C en tra l

K in p o rt

B o ra h

C ed a r H ills

M id p o in t

H em in gw a y

5 0 0 kV to A e o lu s

5 0 0 kV to R ob is o n S u m m it(N o rth e rn S W IP )

5 0 0 kV to G a rr ison(M IS T I)5 0 0 kV to

B o a rdm an

5 0 0 kV toC ap ta in Ja c k

5 0 0 kV toS u m m er L a k e

2 3 0 kV to A tla n tic C ity

2 3 0 kV to P o in t o f R o ck s

2 3 0 kV to M u sta n g

T h ree M ileK n o ll

3 4 5 kV to B e n L o m o n d

3 4 5 kV to Term in a l

P o p u lu s

345 kV

345 kV

500 kV

500 kV

2- 1500 M VA

1 - 1500 M VA

2 - 1500 M VA

1 - 1500 M VA

230 kV

G ateway W est(H em ingw ay - B ridge r)

2 - 750 M VA+20 PSTO

5 0 0 kV3 4 5 kV2 3 0 kV

E x is tin gM P -S L

1 5 3 m ile s3 - A th ab a s ka /T W1 9 49 .6


8 8 m ile s3 - 1 2 7 2S kyla rk

2 - 1 2 7 2S kyla rk

3 4 m ile s3 - A th ab a s ka /T W1 9 49 .6




In-ServiceAction Gateway West Date

Add Bridger - Populus 500 kV #1 (w/series comp) 2014Add Populus 500/345 kV #1 TX 2014Add Populus - Borah 500 kV #1 2016Add Borah 500/345 kV #1 TX 2016Loop KP-MP 345 kV line into Borah to create the KP-BR 345

kV and BR-MP 500 kV2016

Upgrade Series comp on MP-HM 500 kV #1 2016Add Populus - Cedar Hill 500 kV #1 (w/series comp) 2016Add Cedar Hill - Hemingway 500 kV #1 (w/series comp) 2016

20



W in ds ta r

C re s to n

2 3 0 kV to P u m p k in B u tte


2 3 0 kV to A tla ntic C ity

2 3 0 kV to P o in t o f R o cks


2 3 0 kV to C asp e r

2 3 0 kV to Yellow C a ke

2 3 0 kV to D ave Joh n s to n

5 0 0 kV to P o p u lu s

3 4 5 kV to T h ree M ile K no ll

3 4 5 kV to P o p u lu s B rid g e r

5 0 0 kv to M o n a

A e o lu s

345 kV

500 kV

3 - 1500 M VA

2- 1500 M VA

2- 1500 M VA

1- 1500 M VA

500 kV

500 kV

230 kV

230 kV230 kV

SVC

G atew ay W est(B ridger - A eolus - W indsta r)

2 - 750 M VA+20 PSTO

4 8 m ile s3 - A th ab a ska /T W1 9 49 .6


1 4 5 m ile s3 - A th ab a ska /T W1 9 49 .6


7 3 m ile s2 -1 2 7 2 A C S R

8 8 m ile s2 -1 2 7 2 A C S R

5 0 0 kV3 4 5 kV2 3 0 kVG atew ay S outh

Bridger - Windstar

The current schedule calls for all Gateway West – Stage 1 facilities will be in-service by 12/2016.


Add Windstar - Aeolus 230 kV #1 2014Add Windstar - Aeolus 230 kV #2 2014Add Aeolus 500/230 kV #1, #2 & #3 TX 2014Add Aeolus 230 kV SVC (-125/+450 MVA), MSC's at 230 kV

(1-100 MVAr) & 500 kV (4-200 MVAr) 2014

Add Aeolus - Bridger 500 kV #1 (w/series comp) 2014Add SPS - Windstar and/or Aeolus Generator Tripping 2014Add Bridger 500/345 kV #1 & #2 TX 2014Add Bridger 345 kV PST #1 & #2 2014

Modify SPS - Bridger Generator Tripping Scheme 2014

21


Gateway South – Stage 1 Facilities

The current schedule calls for all Gateway South – Stage 1 facilities

will be in-service by 12/2017.

In-ServiceAction Gateway South Date

Add Series comp the PNT-HNT 345 kV line 2010Add SPS - West Cedar 138 kV line sectionalizing scheme 2010Add Red Butte 345 kV SVC (-100/+300 MVAR), MSC's: 4-

120 MVAr (steady-state), 2-110 MVAr (dynamics)2011

Add Harry Allen 345/230 kV #2 TX 2011Add Sigurd - Red Butte 345 kV #2 (w/series comp) 2014Add SPS - Huntington Generator Tripping 2014

Add Aeolus - Mona 500 kV #1 (w/series comp) 2017Add Mona 500/345 kV #1 & #2 TX 2017

2 3 0 kV toW in ds ta r


2 3 0 kv to C res to n /B ridg e r

5 0 0 kv to B rid g e r

3 4 5 kV to O q u irrh

A e o lu s

M o n a

M id d le 1

M id d le 2

S ig u rd

R ed B u tte

C rysta l

345 kV

#1 #2

#2

345 kV

345 kV

500 kV

1500 M VA

1500 M VA

2 - 1500 M VA

3 - 1500 M VA

500 kV

500 kV

500 kV

230 kV

SVC

N ew 500 kV

500 kV

G atew ay S outh S ing le-line

N PCBus

4 - 400 M VA+50 PST




1 6 0 m ile s2 C a rd in a l9 5 4 A C S R

9 5 m ile s3 - A th ab a ska /T W

5 0 0 kV3 4 5 kV2 3 0 kV


G a tew ay W est

500 kV construction,E nerg ized at 345 kV

Aeolus – Mona – So. Nevada

22


EGW Facilities – Stage 2 (Full-Build, 3000 MW)

WYOMING

CRESTON

POPULUS

2

LIMBER(future)

CEDAR HILL

ToCAPTAIN JACK

KINPORTMIDPOINT

BEN LOMOND

TERMINAL

MINERS

AEOLUSBRIDGER

BORAH

WIND RIVER

HAYDEN

BONANZA

4

RED BUTTE

MONA

UTAH

SALT LAKE CITY

COLORADO

NEVADA

IDAHO

MONTANA

2

2

4

CAMP WILLIAMS

HUNTINGTON

SIGURD

PINTO

FOUR CORNERS

HARRY ALLEN CRYSTAL

NEW MEXICOARIZONA

CRAIG

FLAMING GORGE

YELLOW TAIL

WYODAK

500 kV345 kV

230 kV

Legend

Revision: 3.2Updated on: 5/21/09

CHEYENNE

DENVER

2

OREGON

SUMMERLAKE

SALEM

McNARY

2

2

2TERMINAL

OQUIRRH

CAMP WILLIAMS

90TH SOUTH

MID VALLEY

To MONA

2

ROCK SPRINGS

ATLANTIC CITY

WINDSTARGOSHEN

HEMINGWAY

BOISE

Gateway Energy Project Stage 2 – (Ultimate) Transmission Plan

DAVE JOHNSTON

Planned Future Voltage

2

Line Loop-In

Kinport-MP Line Looped-In to Borah. Borah – MP Portion Converted to 500 kV

To Ben Lomond

2

23




Add Bridger - Populus 500 kV #2 (w/series comp) 2017Add Populus 500/345 kV #2 TX 2017Add Series comp POP-BOR 500 kV #1 2017Add Series comp BR-MP 500 kV #1 2017Add Midpoint - Hemingway 500 kV #2 (w/series comp) 2017Add Cedar Hill - Midpoint 500 kV #1 2017

Hemingway - Bridger


2 3 0 kV to A e o lu s/C re sto n

B rid g e r

G o sh e n


K in p o rt

B o ra h

C ed a r H ills

M id p o in t

H em in gw a y

5 0 0 kV to A e o lu s

5 0 0 kV to R ob is o n S u m m it(N o rth e rn S W IP )

5 0 0 kV to G a rr ison(M IS T I)5 0 0 kV to

B o a rdm an

5 0 0 kV toC ap ta in Ja c k

5 0 0 kV toS u m m er L a k e

2 3 0 kV to A tla n tic C ity



T h ree M ileK n o ll

3 4 5 kV to B e n L o m o n d

3 4 5 kV to Term in a l

P o p u lu s

345 kV

345 kV

500 kV

500 kV

2- 1500 M VA

1 - 1500 M VA

2 - 1500 M VA

1 - 1500 M VA

230 kV

G ateway W est(H em ingw ay - B ridge r)

2 - 750 M VA+37 PSTO

5 0 0 kV3 4 5 kV2 3 0 kV

E x is tin gM P -S L



8 8 m ile s3 - 1 2 7 2S kyla rk

2 - 1 2 7 2S kyla rk




1 4 5m ile s3 - A th ab a s ka /T W1 9 49 .6

24



Bridger - Windstar

The current schedule calls for all Gateway West – Stage 2 facilities will be in-service by 12/2017.


Add Windstar 500/230 kV #1 & #2 TX 2017Add Windstar - Aeolus 500 kV #1 2017Add Aeolus - Creston - Bridger 230 kV (or 500 kV) 2017

Modify SPS - Windstar and/or Aeolus Generator Tripping 2017

Add Bridger 345/230 kV #4 & #5 TX (500/230 kV Optional) 2017Modify SPS - Bridger Generator Tripping Scheme 2017

W in ds ta r

C re s to n

2 3 0 kV to P u m p k in B u tte

2 3 0 kV to R oc k S p rin gs

2 3 0 kV to A tla ntic C ity



2 3 0 kV to C as p e r

2 3 0 kV to Yellow C a ke

2 3 0 kV to D av e J oh n s to n

5 0 0 kV to P o p u lu s

3 4 5 kV to T h ree M ile K no ll

3 4 5 kV to P o p u lu s B rid g e r

5 0 0 kv to M o n a

A e o lu s

345 kV

500 kV

3 - 1500 M VA

2- 1500 M VA

2- 1500 M VA

1- 1500 M VA

500 kV

500 kV

230 kV

230 kV230 kV

SVC

G atew ay W est(B ridger - A eolus - W indsta r)

2 - 750 M VA+37 PSTO





7 3 m ile s2 -1 2 7 2 A C S R

8 3 m ile s2 -1 2 7 2 A C S R

5 0 0 kV3 4 5 kV2 3 0 kVG atew ay S outh

25


Gateway South – Stage 2 Facilities

The current schedule calls for all Gateway South – Stage 2 facilities

will be in-service by 12/2019.

Aeolus – Mona – So. Nevada

In-ServiceAction Gateway South Date

Add Aeolus - Mona 500 kV #2 (w/series comp) 2019Add Mona - Sigurd 500 kV #1 2019Add Sigurd 500/345 kV #1 TX 2019Add Sigurd - Red Butte 500 kV #1 (w/series comp) 2019Add Red Butte 500/345 kV #1 TX 2019Add Red Butte - Crystal N 500 kV #1 (w/series comp) 2019Add Crystal 500 kV #1 thru #4 PST 2019Add Series comp the RB-HA 345 kV #1 line 2019Add SPS - H. Allen 345 kV Series Comp 50% Tripping 2019



2 3 0 kv to C res to n /B ridg e r

5 0 0 kv to B rid g e r

5 0 0 kv to L im b e r

A e o lu s

M o n a

M id d le 1

M id d le 2

S ig u rd

R ed B u tte

C ry sta l

345 kV

#1 #2

#2

345 kV

345 kV

500 kV

1500 M VA

1500 M VA

2 - 1500 M VA

3 - 1500 M VA

500 kV

500 kV

500 kV

230 kV

SVC

N ew 500 kV

500 kV

G atew ay S outh S ing le-line

N PCBus

4 - 450 M VA+50 PST




1 6 0 m ile s2 C a rd in a l9 5 4 A C S R

9 5 m ile s3 - A th ab a ska /T W

5 0 0 kV3 4 5 kV2 3 0 kV


G a tew ay W est

26



5. Study Area Path Interactions, Study Participants & Study Issues

27


Study Area Participation Charts for each Study Areas, which indicate Area

Path Interactions, (projected) Study Participants & a drawing of the facilities being evaluated, have been displayed in the meeting room.

Please take time during one of the breaks to review the information and make necessary changes or modifications.

These inputs will help us in move the Phase 2 study efforts forward.

28


Gateway West - So. Idaho Study Area

Paths Analysis

Midpoint West

Borah West (Path 17)

Simultaneous Interactions

Idaho – Northwest (Path 14) Midpoint – Summer Lake (Path

75) Boardman - Hemingway

Montana – Northwest (Path 8)

Path C (Path 20) Montana – Idaho (Path 18) MSTI Project SWIP (Great Basin – North, ENTP) Idaho – Sierra (Path 16)

29


Gateway West – Bridger Study Area

Path Analysis

Bridger West (Path 19)

Path C (Path 20)

Aeolus West

Simultaneous Interactions

Aeolus South Path C (Path 20) Montana – Idaho (Path 18) Bonanza West (Path 33) Monument – Naughton (PAC Internal) RS/FH West (PAC Internal)

Bridger West (Path 19) Bonanza West (Path 33) Monument – Naughton (PAC Internal) RS/FH West (PAC Internal)

Aeolus South TOT 1A (Path 30) Bonanza West (33)

30


Gateway West – Windstar Study Area

Path Analysis TOT 4A (Path 37)

Simultaneous Interactions Montana Southeast (Path 80) TOT 4B (Path 38) TOT 3 (Path 36) Yellowtail South TOT 1A (Path 30)

31


Gateway West – Study Participants

Study Participants• Basin Electric Power Cooperative• Black Hills Cooperation• Bonneville Power Administration,

Transmission/Power Services• Columbia Grid• Deseret Generation & Transmission• Edison Mission Energy• Great Basin Transmission Group• Idaho Power Company• NorthWestern Energy• NV Energy• PacifiCorp• Puget Sound Energy, Inc.• TransCanada• TransWest Express LLC• Western Area Power Administration• Western Grid Group

Correspondents• OPUC• Avista Corp.• NWPP Corporation• Wyoming Public Service

Commission• EnTranTek LLC and Ridgeline

Energy LLC• Invernergy LLC• Wyoming Public Service

Commission

32


Gateway West – Study Issues

Other Issues GW interaction with Bridger West

(PAC) Interactions between Bridger West

and Path C (PAC)

Wyoming Issues Evaluate interaction between

GW and TOT 3 (Wyoming – Colorado); additionally GW and DJ-LRS-Ault transmission lines. (Basin Electric)

Evaluate the interaction between TOT 1A path and each component of the project. (WAPA)

When are SSR Studies planned for? (WAPA)Parallel to Phase 2 process, PACE will perform SSR analysis for portions of the Western Interconnection that are effected by the EGW Project.

33


Gateway South – Aeolus South Study Area

Path Analysis Aeolus South

Simultaneous Interactions Aeolus West Bridger West (Path 19) TOT 1A (Path 30) Bonanza West (Path 30) IPP DC Line, 2400 MW (Path 27) Intermountain – Mona (Path 28) Intermountain – Gonder (Path 29) Pavant – Gonder (Path 32) TOT 2C (Path 35) COI (Path 66) PDCI (Path 65)

34


Gateway South – Mona South Study Area

Path Analysis Mona South

TOT 2C

Simultaneous Interactions IPP DC Line, 2400 MW (Path 27) Intermountain – Mona (Path 28) Intermountain – Gonder (Path 29) Pavant – Gonder (Path 32) TOT 2C (Path 35) COI (Path 66) PDCI (Path 65)

TOT 2A (Path 31) TOT 2B1/2B2 (Paths 78 & 79) IPP DC Line, 2400 MW (Path 27) Intermountain – Mona (Path 28) Intermountain – Gonder (Path 29) Pavant – Gonder (Path 32) Centennial Project (Path 81) SWIP COI (Path 66) PDCI (Path 65)

35


Gateway South – Study Participants

• Arizona Public Service• Basin Electric Power Cooperative• Black Hills Corporation• Columbia Grid• Deseret Generation & Transmission• Idaho Power Company• Los Angeles Department of Water &

Power• LS Power• NorthWestern Energy• NV Energy• PacifiCorp• Puget Sound Energy• Southern California Edison

• Salt River Project• TransWest Express LLC• Tri-State Generation &

Transmission• Utah Association of Municipal

Power Systems• Western Area Power Administration• Wasatch Wind

36


Gateway South – LADWP Study Issues

Simultaneous Interaction between each of the paths noted below and each component of the GS project, and the project as a whole at the projects max loading:

Path 27 (IPPDC 2400 MW) Path 28 (Intermountain –

Mona) Path 29 (Intermountain –

Gonder)

Interactions between existing & proposed PST’s at Crystal

TOT 2C path (+/- 600 MW and +2100/-1700 MW) interaction with other paths.

Staging of TOT 2C facilities Each of the SPS schemes in the

report will be further refined and added to the Project POS.

Continue to evaluate simultaneous interactions among components within the GS Project.

Short circuit analysis to quantify impacts on existing breakers in the southern Nevada/Eldorado Valley

37


Gateway South – Other Study Issues

Evaluate interaction between GS and TOT 3 (Wyoming – Colorado); additionally GS and DJ-LRS-Ault transmission lines. (Basin Electric)

(UPALCO-Carbon 138 kV line): TOT 1A should be monitored and interactions determined in the next phase of studies. (WAPA)

When are SSR Studies planned for? (WAPA)Parallel to Phase 2 process, PACE will perform SSR analysis for portions of the Western Interconnection that are effected by the EGW Project.

How will PacifiCorp determined if the Harry Allen – Mead 500 kV #2 line should be included in the GS plan-of-service. (TWE) Detailed analysis of the impacts of a new transmission line between Crystal and Mead and the Centennial Project will be evaluated during the Phase 2 studies.

Is there a dependent relationship between the PacifiCorp and other project in WECC Phase 2? (TWE)Phase 1 studies demonstrated that Gateway South can achieve its ratings with or without the Great Basin North 500 kV line being constructed. Additional simultaneous analysis for other Western Interconnection paths will be performed during Phase 2 technical studies.

38



6. Study Area: “Straw-man” Study Plan

39


Study Area – “Straw-man” Study Plan

Study Plan Format: Detail for Phase 1 Analysis

2015 HS base case Resource Assumptions (PAC IRP & OASIS Inputs)

Project Configuration (Full-Build Option) Study Criteria List of Outages, etc. Place Holder for Phase 2 Studies

Project Staging (1500 MW/3000 MW) Study Base Cases → See Next Slide Resource Assumptions

Stage 1 – Updated IRP, Stage 2 – Extended IRP *Being Refined* Path Simultaneous Interactions Issues raised by Phase 2 Study participants

Once approved, Study Plan will need to be tailored for each sub-Area

40


Energy Gateway Base Cases

Study Period Base Case Release Date2019 HS 19HS1P.ZIP 3/17/2009

☼ 2018 HS 18HS1A1P.ZIP 6/13/20082017 HW 17HW1A1P.ZIP 7/10/20072016 HW 16HW1SA1P.ZIP 10/10/20082015 HS 15HS1SA1P.ZIP 4/6/20072014 HW 14HW1A1P.ZIP 1/16/20092014 HS 14HS2SA1P.ZIP 7/23/2008

☼ 2013 LW 13LW1SA1P.ZIP 1/7/20092013 HW 13HW1A1P.ZIP 3/3/2008

● 2013 HS 13HS1A1P.ZIP 10/10/2008

2012 HS 12HS2A1P.ZIP 11/15/20072011 LSP 11LSP1SA1P.ZIP 10/29/20072011 HS 11HS1B1P.ZIP 1/11/20072010 LW 10LW1P.ZIP 4/14/20092010 LA 10LA1SA1P.ZIP 12/21/20062010 HW 10HW2P.ZIP 3/24/20092010 HSP 10HSP1P.ZIP 4/28/20092010 HS 10HS2SA1P.ZIP 10/5/2007

● 2009 LW 09LW1A1P.ZIP 6/27/20082009 LS 09LS1A1P.ZIP 1/30/20092009 HW 09HW2A1P.ZIP 6/17/20082009 HSP 09HSP1A1P.ZIP 7/10/20082009 HS 09HS3A1P.ZIP 2/4/2009

TOT 4B Study Base Case (Pre-Gateway)

EGW Off-Peak Base Case

EGW Heavy Summer Base Case

Comments

TOT 2C/Southern Utah Study Base Case. Will be used to evaluate 2013, 2017, 2011 periods

41



7. Study Schedule

42


Study Schedule

IPC: West of PopulusID Task Name Start End

20092007 2010 2012 2013

Q4 Q2Q1Q2 Q3Q1Q4 Q3Q3Q1 Q3Q3Q1Q3 Q1Q4 Q4Q2 Q4

2/1/20107/2/

2007NEPA Process

3 6/1/20101/1/

2009WECC Phase 2 Rating Process

2/1/20107/2/

2007BLM Right of Way Grants

1/23/20121/1/

2008Right of Way Acquisition

12/31/2010

1/1/2008Permitting

12/30/2011

1/1/2008Engineering

12/31/2015

2/2/2010Construction

2008 2011

Q1Q2Q2 Q4

10

9

8

7

6

212/31/2008

2/1/2008

WECC Phase 1 Rating Process

1 5/30/20087/5/

2007WECC Regional Planning Process

5

Q2 Q3 Q4

412/31/2015

6/2/2010

WECC Phase 3 Rating

2014 2015

Q1 Q2 Q3 Q4 Q1 Q2

2016

Q3 Q4 Q1 Q2

43


Study Schedule

PacifiCorp

44



8. Q&A

Documents

Energy Gateway Gateway West Project Gateway South Project